Improvement in pressure-regulators



G. H. WOOD, v PRESSURE-REGULATOR.

No. 193,629. Patented July 31,1877.

N. PETERS, PHOTO-LIYHOGRAPHER. WASHINGTON. D C.

GEORGE swoon, or PoRT HURON, MICHIGAN, ASSIGNOR 0E oNE-HALE HIS RIGHTTO PETER B. sANBoRn, ZRA o. CARLTON, AND WILLIAM STEWART, OF SAME PLACE. r

IMPROVEMENT IN PRESSURE-REGULATORS;

Specification forming part of Letters Patent No. l 93,629, dated July 31, 1877 application filed June 12, 1877..

To all whom it may concern:

Be it knownthat I, GEORGE E. WOOD, of Port Huron,in the county of St. Glair and State of Michigan, have invented certain new and useful Improvements in Pressure -Regulators; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, and to the letters of refer- In the annexed drawing, A refers to a case or bulb, of any preferred form, having an inlet, a, provided with a nozzle for its attachment to a pipe or other passage-a water or gas main, for instance-the pressure of which liquid or fluid, being conducted from the water-reservoir or gasometer, it is desired to regulate. This case or bulb is provided with an outlet, (1 having a nozzle, to permit of the attachment thereto of a discharging pipe or conduit. I

B is a valve, seated upon the inner end of the inlet-pipe a, and having a stem, I), depending from it, provided with a cross-piece or guide, b, to keep the valve centrally over the said inlet when open. This valve is connected to a diaphragm or partition, 0, made from some yielding or flexible material, and fastened down within the case or bulb A, between the securing-flanges and screws of its cap or dome a. The connection between the said valve and diaphragm consists, preferably, of a lever, c, fulcrumed upon a short post or erture in the center of the dome or cap a Resting or bearing upon the upper end of the said stem or bar a, and having its lower end confined in the said aperture, is a screw, 01,

having a hand'wheel, (P, or its equivalent, for rotating said screw, and a nut, W, to which is rigidly fastened the upper end of a spring, D, bearing upon the apex of the dome or cap a, to which it may be also secured. E is a safetyvalve in the bottom of the bulb or case.

The operation of my regulator is as follows: The cock of the discharging-pipe is opened,

when the flowing liquid or fluid from the chamber or case A will thus disturb the equilibrium of pressure upon the upper and lower sides of the valve, the pressure below the valve, of course, predominating, causing it (the valve) to open and permit of the ingress of the liquid or fluid, which will continue to flow until the supply becomes greater than the discharge. In that event, it will be observed that the excess of pressure upon the diaphragm or partition G will flex or bow it upwardly, which will elevate its arm of thelever 0, and depress that arm thereof attached to, and close the valve until the excess of flow or pressure is stayed, when the valve will resume its open position and again allow the ingress of the liquid or fluid, thus automatically regulating the pressure.

It will be seen that by turning the hand wheel or lever 01 the screw 01 will be rotated, and its nut d raised or lowered, according to the direction given the wheel or lever, when the springD will be distended or compressed, the effect of which, of course, will be to vary the tension of the diaphragm or partition,

causing it to bear with greater or less pressure, through its connection, upon the valve B.

It will also be seen that in the event the flexible diaphragm becomes distended or too yielding by constant use, 860., the slack or irregularity thus producedcan also be remedied by: the pressure-regulating device.

Having thus described my invention,v what I claim, and desire to secure by Letters Patent, is- In a pressure-regulator, the case A, havin the flexible or yielding partition; or diaphragm 0, in combination with the valve B, lever:- connection a 0. screw d, having'a nut d and spring D, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I hereunto aflix my signature in pres- 7 mice: of two witnesses.

GEORGE H; WOOD. Witnesses:

WILL. E. STEWART, Qlms. F. SmEwm-w. 

